System for handling displacement of liquid products
a technology for liquid products and systems, applied in liquid handling, liquid transferring devices, instruments, etc., can solve problems such as gas formation (off-gassing), extreme difficulty in killing, and general harshness of chemistries, and achieve the effect of reducing or completely solving the problem
Active Publication Date: 2014-06-12
ECOLAB USA INC
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- Application Information
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Benefits of technology
The present invention provides a new apparatus, method, and system to overcome the problems in the liquid dispensing industry. It prevents displaced, concentrated product from being dispensed from the dispenser, uses an unprimed product line for dispensing, is safe for the end user, and captures any displaced liquid product in the product line.
Problems solved by technology
The organism spores spread easily and are extremely difficult to kill.
It has become such a problem that it is one of the leading hospital acquired infections in the United States.
In a concentrated form, these chemistries are generally quite harsh and often carry significant safety warning language and requirements for use of personal protective equipment (e.g., chemical resistant gloves, splash goggles, etc.).
Peroxide and peracid chemistries decompose over time, resulting in gas formation (off-gassing).
In a conventional dispensing system, this off-gassing can result in gas bubble formation on the inner wall of the product line tube that delivers the chemistry to the dispenser.
The formation of these bubbles in the product line displaces concentrated liquid product and can cause concentrated product to be displaced through the outlet of the dispenser.
Method used
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[0032]FIG. 1 is a schematic diagram of a primed product line 52, or at least a section thereof. The primed product line 52 includes a liquid product 40, which comprises a chemistry that produces bubbles 42 caused by off-gassing. For example, the product might be a peroxyacetic acid / hydrogen peroxide chemistry, and the bubbles 42 or off-gassing occur due to the natural decomposition of the product. Other chemistries of liquid product may also cause similar reactions due to the natural degradation of the chemistry, which would also produce the bubbles 42 of the off-gassing. Thus, the invention is not to be limited to specific chemistries and / or products, and can be used with generally any type of product and in generally any industry. The off-gassing forms bubbles 42 that continue to build up on the wall of the product line 52. The failure of these bubbles 42 to propagate up and out of the line 52 causes the volume of the bubbles 42 to displace that same volume of product 40 upward an...
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Abstract
Methods, apparatuses, and systems for dispensing an off-gassing liquid product mixed with a diluting product are provided. A liquid product or product solution is moved through a primed product line and towards a dispenser. The liquid product is combined with the diluting product to create a solution. The solution is dispensed. The product line is cleared of unused or displaced liquid product by redirecting at least a portion of the unused or displaced liquid product in the product line to a displacement system operatively attached to the product line. The displacement system includes a check valve including a crack pressure that allows the unused or displaced product to be dispensed back into the product source or a separate, secondary container.
Description
CROSS REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority under 35 U.S.C. §119 to provisional application Ser. No. 61 / 734,532, filed Dec. 7, 2012, which is hereby incorporated by reference in its entirety.FIELD OF THE INVENTION[0002]The invention is directed towards liquid dispensers. More particularly, but not exclusively, the invention is directed towards liquid dispensers dispensing an off-gas producing liquid product that is combined with a diluting product.BACKGROUND OF THE INVENTION[0003]Clostridium difficile (C. diff) infection is a serious disease that takes a heavy toll on the people afflicted with it. The organism spores spread easily and are extremely difficult to kill. It has become such a problem that it is one of the leading hospital acquired infections in the United States. Reducing the spread of infection and addressing spores in the healthcare environment has become a focus area for hospitals, long term care facilities, other healthcare facilitie...
Claims
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IPC IPC(8): B01F5/04
CPCA61L2/186A61L2202/11B01F23/451B01F23/483B01F25/31242B01F25/316B67D7/78
Inventor FREUDENBERG, JARED R.ANDERSON, TROY A.CARBONE, II, HENRY LOUISCARROLL, RYANURBAN, RYAN JACOB
Owner ECOLAB USA INC